2.1.1 Work and Force Defined in Rope Rescue
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anchor loading
Understanding vector analysis in skate block systems
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Understanding the Petzl Spin L1D pulley
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Understanding Mechanical Advantage Systems
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Operating a Riggers Winch for Vertical Rescue
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Understanding Mechanical Advantage Systems
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Pulley Systems Rules Knots & Pulleys in Rope Rigging Systems
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Understanding mechanical advantage with rope grabs
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